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Updated: Jul 14, 2026

Detection of Inflammasome Activation and Pyroptotic Cell Death in Murine Bone Marrow-derived Macrophages
Published on: May 21, 2018
The PYRIN domain in signal transduction
1Mary Babb Randolph Cancer Center and Department of Microbiology, Immunology and Cell Biology, West Virginia University, Morgantown, WV 26506-9300, USA. cstehlik@hsc.wvu.edu
Abstract:
The Death Domain Fold superfamily of evolutionarily conserved protein-protein interaction domains consists of 4 subfamilies: the death domain, the death effector domain, the caspase recruitment domain, and the PYRIN domain. Interaction of Death Domain Fold containing proteins modulates the activity of several downstream effectors, such as caspases and transcription factors. Recent studies provide evidence for not only homotypic-, but also heterotypic interactions among different sub-families, and even unconventional non-death domain fold interactions. As the number of potential protein associations among Death Domain Fold containing proteins expands and their influence on cellular responses increases, a challenging field for new investigations opens up. This review will focus on PYRIN domain-containing proteins and discuss the recent advances that provide strong evidence that PYRIN domain-mediated signal transduction has broad implications on cellular functions, including innate immunity, inflammation, differentiation, apoptosis, and cancer.
Insights
PYRIN domain-containing proteins mediate crucial cellular functions, including immunity and cancer. This review highlights recent advances in understanding PYRIN domain interactions and their broad impact on cell signaling.
Area of Science:
- Molecular Biology
- Cellular Biology
- Immunology
Background:
- The Death Domain Fold superfamily comprises four protein-protein interaction domain subfamilies.
- Interactions involving these domains influence downstream effectors like caspases and transcription factors.
- Emerging evidence shows complex homotypic, heterotypic, and unconventional interactions within this superfamily.
Purpose of the Study:
- To review recent advances in understanding PYRIN domain-containing proteins.
- To highlight the broad implications of PYRIN domain-mediated signal transduction.
- To explore the role of PYRIN domains in cellular functions.
Main Methods:
- Literature review of recent studies on PYRIN domain-containing proteins.
- Analysis of protein-protein interaction data.
- Synthesis of findings related to PYRIN domain function.
Main Results:
- PYRIN domain-mediated signal transduction impacts innate immunity and inflammation.
- PYRIN domains are implicated in cellular differentiation, apoptosis, and cancer.
- Complex interaction networks involving PYRIN domains are increasingly recognized.
Conclusions:
- PYRIN domain-mediated signaling is a critical regulator of diverse cellular processes.
- Further investigation into PYRIN domain interactions is warranted.
- Understanding these interactions has implications for disease research, including cancer and inflammatory conditions.
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